:root{--primary:#ff4b4b;--primary-hover:#e04343;--bg:#f5f5f5;--sidebar-bg:#f0f2f6;--card-bg:#fff;--text:#262730;--text-secondary:#555;--border:#e0e0e0;--border-light:#eee;--radius:10px;--radius-sm:6px;--shadow:0 2px 8px #0000000f;--shadow-lg:0 8px 30px #0000001a;--transition:.2s ease;--font:"Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;--sidebar-width:340px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;min-height:100vh;line-height:1.6;display:flex}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--sidebar-bg);border-right:1px solid var(--border);z-index:10;scrollbar-width:thin;scrollbar-color:#ccc transparent;flex-direction:column;gap:16px;height:100vh;padding:20px 18px;display:flex;position:sticky;top:0;overflow-y:auto}.sidebar::-webkit-scrollbar{width:5px}.sidebar::-webkit-scrollbar-thumb{background:#ccc;border-radius:10px}.sidebar h3{color:var(--text);letter-spacing:-.01em;margin:0;font-size:1.05rem;font-weight:700}.sidebar label{color:var(--text-secondary);letter-spacing:.01em;margin-bottom:4px;font-size:.85rem;font-weight:600;display:block}.sidebar input[type=text],.sidebar input[type=number],.sidebar textarea,.sidebar select{border:1.5px solid var(--border);border-radius:var(--radius-sm);width:100%;font-size:.9rem;font-family:var(--font);transition:border var(--transition), box-shadow var(--transition);background:#fff;outline:none;padding:9px 12px}.sidebar input:focus,.sidebar textarea:focus,.sidebar select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #ff4b4b14}.sidebar textarea{resize:vertical;min-height:80px}.sidebar .btn{border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);font-size:.85rem;font-weight:600;font-family:var(--font);letter-spacing:.01em;white-space:nowrap;border:1.5px solid #0000;justify-content:center;align-items:center;gap:6px;padding:9px 16px;display:inline-flex}.sidebar .btn-sm{border-radius:4px;padding:6px 12px;font-size:.8rem}.sidebar .btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.sidebar .btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 2px 8px #ff4b4b40}.sidebar .btn-outline{color:var(--text);border-color:var(--border);background:#fff}.sidebar .btn-outline:hover{background:#fafafa;border-color:#bbb}.sidebar .btn-danger-outline{color:#c0392b;background:#fff;border-color:#e0c0c0}.sidebar .btn-danger-outline:hover{background:#fef5f5;border-color:#c0392b}.sidebar .divider{border-top:1px solid var(--border-light);margin:4px 0}.sidebar .info-box{border:1px solid 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h2{color:var(--text);margin:0;font-size:1.2rem;font-weight:700}.card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border-light);transition:box-shadow var(--transition);padding:22px 24px}.card:hover{box-shadow:var(--shadow-lg)}.card-header{color:var(--text);margin-bottom:12px;font-size:1rem;font-weight:700}.upload-zone{border-radius:var(--radius);text-align:center;cursor:pointer;transition:all var(--transition);background:#fafbfc;border:2.5px dashed #ccc;padding:40px 20px;position:relative}.upload-zone:hover,.upload-zone.dragover{border-color:var(--primary);background:#fff5f5;box-shadow:inset 0 0 0 4px #ff4b4b0a}.upload-zone .icon{margin-bottom:8px;font-size:2.5rem}.upload-zone p{color:var(--text-secondary);margin:4px 0;font-size:.9rem}.upload-zone .browse-link{color:var(--primary);cursor:pointer;font-weight:700;text-decoration:underline}.upload-zone 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.modal-close:hover{color:#000}.modal-overlay .modal-body{background:#f0f0f0;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}.modal-overlay .modal-body img{object-fit:contain;cursor:zoom-out;max-width:100%;max-height:100%}.modal-overlay .modal-body iframe{border:none;width:100%;height:100%}.preview-item{position:relative}.preview-item .delete-btn{color:#fff;cursor:pointer;z-index:5;background:#ff4b4b;border:none;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:14px;font-weight:700;line-height:1;transition:transform .15s;display:flex;position:absolute;top:-6px;right:-6px;box-shadow:0 2px 6px #0003}.preview-item .delete-btn:hover{background:#d32f2f;transform:scale(1.2)}.annotation-layer .annotation-box{pointer-events:auto;cursor:pointer;z-index:10003;background:#ff4b4b1f;border:2.5px solid #ff4b4b;border-radius:2px;transition:background .2s,border-color .2s;position:absolute}.annotation-layer 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iframe{border:none;border-radius:4px;width:100%;height:100%}.modal-right-panel{background:#fff;flex-direction:column;width:45%;min-width:320px;display:flex;overflow:hidden}.modal-right-header{border-bottom:1px solid var(--border-light);color:var(--text);background:linear-gradient(135deg,#f5f6f8 0%,#eef0f3 100%);flex-shrink:0;align-items:center;gap:8px;padding:14px 18px;font-size:.95rem;font-weight:700;display:flex}.modal-right-header:before{content:"📋";font-size:1.1rem}.modal-right-content{background:#fafbfc;flex:1;padding:14px 18px;overflow-y:auto}.modal-right-content .editable-table-wrap{border:1px solid var(--border-light);border-radius:var(--radius-sm);background:#fff;max-height:none;overflow-y:visible}.modal-right-content textarea{border:1.5px solid var(--border);border-radius:var(--radius-sm);resize:vertical;background:#fff;width:100%;min-height:200px;padding:12px;font-family:Consolas,SF Mono,Menlo,Monaco,monospace;font-size:.85rem;line-height:1.6;transition:border-color .2s,box-shadow .2s}.modal-right-content textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #ff4b4b14}.modal-right-actions{border-top:1px solid var(--border-light);background:linear-gradient(135deg,#fafafa 0%,#f5f5f5 100%);flex-wrap:wrap;flex-shrink:0;gap:8px;padding:12px 18px;display:flex}.modal-right-actions .btn{border-radius:6px;padding:8px 16px;font-size:.8rem}.modal-close{color:#fff;cursor:pointer;z-index:10001;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0000004d;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:28px;font-weight:700;line-height:1;transition:all .2s;display:flex;position:absolute;top:12px;right:16px}.modal-close:hover{color:#fff;background:#ff4b4bcc;transform:scale(1.1)}.modal-right-content .bbox-trigger{cursor:pointer;color:#2980b9;border-radius:3px;padding:2px 6px;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;transition:all .2s;display:inline-block}.modal-right-content .bbox-trigger:hover{color:#ff4b4b;background:#ff4b4b1a;text-decoration-color:#ff4b4b}.modal-right-content .bbox-cell{cursor:pointer;transition:background .2s;position:relative}.modal-right-content .bbox-cell:hover{background:#ff4b4b14!important}.modal-right-content .bbox-cell.highlight{outline-offset:-2px;outline:2px solid #ff4b4b;background:#ff4b4b26!important}.annotation-box.highlight{box-shadow:0 0 12px #ff980066;z-index:10004!important;background:#ff980040!important;border-color:#ff9800!important}.annotation-layer{z-index:10002;pointer-events:none;width:100%;height:100%;position:absolute;top:0;left:0}.annotation-layer .annotation-container{width:100%;height:100%;position:relative}.annotation-layer .annotation-box{position:absolute}